The Gewehr 98 or model 98 (M98) rifle is a manually operated, magazine-fed, controlled-feed
bolt-action rifle, in length and in weight. It has a long
rifled barrel and carries 5 rounds of ammunition in an internal
magazine. The Gewehr 98 has two sling swivels, open front sights, and a curved tangent-type rear sight, known as the
Lange Visier. The controlled-feed bolt-action of the Gewehr 98 is a distinct feature and is regarded as one of the major bolt-action system designs.
M98 controlled-feed bolt-action system with 7.92×57mm JS cartridges The controlled-feed Mauser M98
bolt-action system is based on previous 19th-century Mauser bolt-action rifle designs and is a simple, strong, safe, and well-thought-out design intended to negate as many failure modes as possible and which inspired other military and hunting/sporting rifle designs that became available during the 20th century. A drawback of the M98 system is that it cannot be cheaply mass-produced very easily.
Features The M98 system consists of a
receiver that serves as the system's shroud and a bolt group of which the bolt body has three locking lugs, two large main lugs - of which the left is slotted - at the bolt head and a third safety lug at the rear of the bolt, which serves as a backup in case the primary locking lugs failed. This third lug is a distinctive feature and was not present on previous Mauser bolt-action designs. The two main locking lugs are positioned opposed to each other and display a locking surface of , whilst the third safety lug normally plays no part in locking the action to avoid
asymmetric and hence unbalanced
bolt thrust forces. The diameter of the M98 system receiver ring was also enlarged to diameter compared to previous Mauser "small ring" bolt-action designs that had diameter receiver rings for additional strength and safety. Accordingly, the barrel shank was enlarged to diameter with of threaded area at 12 threads per inch compared to previous Mauser "small shank" bolt-action designs that had diameter with of threaded area at 12 threads per inch barrel shanks for additional strength. The bolt handle is permanently attached to the bolt and, on the Gewehr 98, is straight and protrudes out for optimal leverage. Another distinctive feature of the M98 system is the controlled-feed mechanism, consisting of a large, non-rotating claw extractor that engages the cartridge case rim as soon as the round leaves the magazine and firmly holds the cartridge case until the round is ejected by the ejector, mounted inside the receiver. Combined with a slight bolt retraction at the first stage of the bolt opening cycle, caused by the cammed surface on the rear receiver bridge, this results in a positive cartridge case extraction. The M98 bolt-action will cycle correctly, irrespective of the way the rifle is moved or positioned during the bolt cycling action or if the cartridge has been fired or not. Only if the bolt is not brought back far enough, sharply enough, in a controlled round feed bolt-action the cartridge case may not be cleanly ejected and a jam may result. The bolt houses the firing pin mechanism that cocks when the bolt is opened, and the cocking piece protrudes visually and tactilely from the rear of the bolt to indicate the action is cocked. A cocking shroud lock that was not present on previous Mauser bolt-action designs was added. The distance the firing pin needs to travel was decreased to reduce and hence improve
lock time – the amount of time between initiating the firing sequence by pulling the trigger and the firing pin striking the
primer that ignites the propellant contained in the 7.92×57mm Mauser
cartridge. The M98 action features two large oval shaped gas relief holes on the bottom of the bolt, which when catastrophic failures like a primer, cartridge rupture or detonation occur relieve high pressure gases into the magazine, and a gas shield on the bolt sleeve. Military M98 systems feature a secondary gas relief where gas is routed down the locking lug raceway to a thumb hole cutout exit on left side of receiver. Civilian M98 systems often lack the thumb hole cut out, as the ammunition feeding is generally simplified to single round feeding only. These safety features are designed to route escaping gas out of the bolt and eventual debris away from the operator's face. The M98 bolt group can be easily removed from the receiver simply by rotating the safety lever to the 12 o'clock position and pulling out the bolt stop lever, located at the rear left wall of the receiver, and then operate the action and continue rearward bolt travel past the bolt stop. The metal disc inlay in the
stock functions as a bolt disassembly tool. Many metal parts of the Gewehr 98 were
blued, a process in which steel is partially protected against rust by a layer of
magnetite (Fe3O4). Such a thin
black oxide layer provides minimal protection against rust or corrosion, unless also treated with a water-displacing oil to reduce wetting and
galvanic corrosion. From 1905 until 1945 the German military used
Ballistol intended for cleaning, lubricating, and protecting metallic, wooden and leather firearms parts.
Safety A three-position flag style
safety attached at the rear of the bolt which operating lever can be flicked from right (safety on, bolt locked) to middle (safety on, bolt can be opened for reloading), to left (ready to fire), but only when the rifle is cocked; otherwise, the safety will not move. In the right most position, the safety blocks the
firing pin and when the trigger is pulled, the firing pin will not be released due to the safety. Additionally, a protruding piece prevents the bolt handle from being lifted and thus prevents the bolt from being pulled back as the locking lugs are still engaged. When the safety is in the middle position, the sights are obstructed and the firing pin is still blocked and thus the trigger is still dead. However, the aforementioned protruding piece is absent, and the bolt can be cycled, allowing for loading and removal of the bolt for cleaning. The left most position is the fire position and a cut out permits movement of the firing pin and the bolt can be cycled. The safety catch lever is quite large, making it easy to operate, but posing a problem for mounting
telescopic sights low above the receiver whilst retaining good operability of the safety catch lever.
Ammunition feeding The
internal magazine of the M98 system consists of an integral box machined to match the cartridge for which the rifle was being chambered, with a detachable floorplate, that can hold up to 5 rifle cartridges. The German military M98 system internal magazine boxes feature an internal magazine length of to store maximal overall length 7.92×57mm Mauser cartridges without dimensional issues. The cartridges are stored in the magazine box in a staggered column at a stacking angle of 30 degrees, so viewed from the end, three cartridges touching each other form the points of an equilateral triangle. The magazine can be loaded with single rounds by pushing the cartridges into the receiver top opening or via
stripper clips. Each stripper clip can hold 5 rounds to fill the magazine and is inserted into clip guides machined into the rear receiver bridge. After loading, the empty clip is ejected when the bolt is closed. The clip is ejected because it has two small protrusions on either side, which are the only points of contact with the clip guide. These protrusions rest at the top of the guide, while the lower part of the clip is narrower than the guide itself. As the bolt moves forward, it pushes the bottom of the clip out, causing the clip to rotate around the protrusions until it is fully ejected. For easier loading a crescent shaped thumb hole cutout is present at the left rear of the receiver top. The magazine can be unloaded by operating the bolt (the safety should, for safety reasons, be set to the middle position for this) or, in case of mechanical problems, by opening the magazine floorplate, which is flush with the stock, with the help of a cartridge tip. Alternatively cartridges can be loaded singly directly into the chamber, as is standard on military rifles of the period, since the extractor is spring-loaded and designed so the extractor claw "pops" over the rim of the cartridge on closing. The Gewehr 98 had no
magazine cut-off mechanism, which when engaged permits the feeding and extraction of single cartridges only while keeping the cartridges in the magazine in reserve. Like the M98 system Mauser magazine fed bolt-action systems were generally not manufactured with magazine cut-offs, the
Ottoman Mauser Model 1893 variant being the exception.
Modern civilian offsprings of the M98 system Though the production of the M98 system for the German military ceased at the end of World War II in 1945, the production of new
Mauser M 98 and Mauser M 98 Magnum rifles for civil users has continued using both repurposed military systems as well as newly made systems from several manufacturers worldwide. New systems were being manufactured not only by the Mauser GmbH in Germany, but also by FN in Belgium, Zbrojovka Brno in Czechoslovakia and Zastava in Yugoslavia. The Mauser-Werke GmbH stopped the production of the M98 system in the 1960s and replaced it with the Model 66, a new construction. However, after going through several ownership changes and a name change, the reconstituted
Mauser Jagdwaffen GmbH resumed the production of M98 rifles in 1999 according to original drawings and in style of the interwar-period Mauser hunting rifles. These rifles retail (2009) for approximately EUR 6,800 for the basic Mauser M 98 version, but the addition of (luxury) options can make these rifles much more expensive. Several other gun manufacturers and custom gun builders also currently produce new M98 system clones or M98 inspired bolt-action hunting/sporting rifles. Desirable features of the M98 system, like its controlled feeding, were carried over to a host of later bolt-action designs. These designs feature technical alterations to simplify production and technical and ergonomic improvements.
Trigger The rifle had a
two-stage trigger with considerable take up before the trigger engages the sear. This feature aids in preventing premature firing during stressful (combat) situations. Additionally, the two stage trigger allows for a much smoother trigger pull and release of the firing pin.
Sights Originally the Gewehr 98 sight line had an open post type front sight, and a curved tangent-type rear sight with a V-shaped rear notch, known as the
Lange Visier (Lange sight after its designer Lieutenant Colonel Lange). The rear sight was graduated for 1888 pattern M/88 cartridges from to in increments. The M/88 cartridge was loaded with full metal jacket projectiles of the round-nosed type. The standard open
iron sight aiming elements consisted of relatively coarse rugged aiming elements making the sightline suitable for rough handling and low light usage, but less suitable for aiming at small point targets. The tracks of the rear sight obstructed the view to the sides during aiming. The sights were designed with distant area fire targets like charging horseman units in mind, so the standard iron sight line could be calibrated for very long ranges. Military doctrine in the late 19th and early 20th centuries considered firing at distant area targets, where an officer would call out the range and the soldiers shot in volley, normal. German government driven efforts to improve the performance of the military M/88 ammunition and the service arms in which the M/88 was used resulted in the design by the
Gewehr-Prüfungskommission and adaptation in 1903 of the dimensionally redesigned 7.92×57mm Mauser chambering. Besides the chambering, the bore (designated as "S-bore") was also dimensionally redesigned. The 1903 pattern 7.92×57mm Mauser
S Patrone (S ball cartridge) was loaded with a lighter , pointed
Spitzgeschoß (spitzer bullet) of diameter and more powerful double-base (based on
nitrocellulose and
nitroglycerin)
smokeless powder. With the improved
ballistic coefficient of the new spitzer bullet, the 1903 pattern cartridge had an improved maximum effective range and a flatter trajectory, and was therefore less critical of range estimation compared to the M/88 cartridge. With the introduction of the
S Patrone the rear sight graduation was changed accordingly and could be regulated from to in increments. While the modified sight line for 1903 pattern 7.92×57mm Mauser
S Patrone IS cartridges was calibrated for a minimum zero distance of and can result in hitting high when using the open post front sight and V-shaped rear notch at close range, the pillars formed by the tracks of the rear sight allow closer targets to be quickly bracketed between the "goalposts", a sighting method that automatically compensates for the high point of aim using the normal sighting method at sub- ranges.
Stock The Gewehr 98 oil finished rifle stock features a semi-pistol grip. A top handguard was standard on all rifles and extended from the front of the rear sight base terminating just ahead of the bottom barrel band. A steel cross bolt was mounted to distribute the forces and hence the effects of recoil on the stock bedding, reducing the chance to split the stock. The stock featured a quick detachable sling swivel on the underside of the butt stock, a top swivel located underneath the bottom barrel band, and a parade hook mounted on the underside of the top H-style barrel band. The prewar stocks were produced from
walnut wood and were aged for an average of three years to allow the wood to stabilize. Beginning in 1917, walnut shortages necessitated the use of
beech wood. The late-war production beech stocks were less durable and heavier than the original walnut stocks.
Accessories The rifle was issued with a leather carrying
sling. During the duration of World War I, due to a shortage of leather, slings were produced out of canvas. The rifle was able to fire
rifle grenades. Various attachable rifle grenade launcher models were designed during World War I. The Gewehr 98 was designed to be used with a
bayonet. For this the rifle had a H-style top barrel-band with a long bayonet lug. The long bearing surface on the Gewehr 98 bayonet lug eliminated the addition of a muzzle ring. The advantage of this solution lies in the fact that muzzle rings can interfere with barrel oscillation which can significantly impede the accuracy of a rifle. The rifle was originally issued with the
Seitengewehr 98 pattern bayonet. This épée style bayonet has a long quillback blade. By the end of 1905, this bayonet began to be replaced with the more robust and practical
Seitengewehr 98/05, with a blade. It was called the "Butcher Blade" by the Allies due to its distinctive shape, and was initially intended for artillerymen and engineers as a chopping tool as well as a weapon. Towards the end of World War I, the blade
Seitengewehr 84/98 was introduced as an economy measure and because the longer models were impractical in narrow trenches; this model became standard issue during the
Weimar Republic and
Third Reich. Serrated, saw-backed versions of the standard patterns intended to be used as tools were carried by German
Pioniere (
pioneers). ==Variants==